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    <td width="154" colspan="2" align="left"><font face="Verdana, Arial, Helvetica, sans-serif" size="4">If you use the perfect ratio as described by the chemical reaction, then you will have the same problem you had with the &quot;perfect ratio&quot; reaction above.</font>
      <p><font size="4" face="Verdana, Arial, Helvetica, sans-serif">The last bit of fuel has a hard time finding the last bit of oxygen, so some unburned fuel will come out of the tailpipe as pollution. </font></p></td></tr>
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